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Enhancing weld quality by measuring argon

World Pipelines,

Weld Purge Monitors® (WPMs) are usually required to help achieve non-oxidised, zero colour welds when welding metals such as stainless, chrome, duplex steels, alongside titanium and nickel alloys.

However, few welding personnel realise that they can use WPMs to measure the quality of the argon gas being used during weld purging.

The low cost Huntingdon Fusion Techniques (HFT) PurgEye® 100 WPM can ensure the quality of the argon gas being used by measuring from atmospheric level (20.94%), down to as low as 100 parts per million (ppm).

Companies are increasingly finding inferior argon that is not what it says on the bottle. Often, customers blame other equipment, such as their purging systems or monitors, for getting bad heat tint. However, it could well be their source gas quality.

Simply connecting the PurgEye 100 directly to the regulator on the argon cylinder before welding or purging and measuring the ppm level, can perhaps, solve this issue.

The PurgEye 100 is IP65 rated with leak-tight push buttons, auto calibration features, vacuum-sealed leak-tight probe assembly, wrist/neck strap and a tripod mount.

The long life sensor provides approximately 18 months life before it needs to be changed. A low sensor indicator will appear on the screen, warning that a new sensor is required. The icon allows the user adequate time to obtain a new sensor.

The PurgEye 100 has a clear LCD screen with a 24 mm high display. The display also shows a low battery icon. When the monitor is not in use, an automatic sleep mode activates to conserve battery life.

The WPM was invented by HFT in the 1970s and the company now has a family of PurgEye WPMs to measure oxygen levels from atmospheric content (20.94%) to 1 ppm (accurate to 10 ppm).

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